/*
 * Licensed to the Apache Software Foundation (ASF) under one or more
 * contributor license agreements.  See the NOTICE file distributed with
 * this work for additional information regarding copyright ownership.
 * The ASF licenses this file to You under the Apache License, Version 2.0
 * (the "License"); you may not use this file except in compliance with
 * the License.  You may obtain a copy of the License at
 *
 *     http://www.apache.org/licenses/LICENSE-2.0
 *
 * Unless required by applicable law or agreed to in writing, software
 * distributed under the License is distributed on an "AS IS" BASIS,
 * WITHOUT WARRANTIES OR CONDITIONS OF ANY KIND, either express or implied.
 * See the License for the specific language governing permissions and
 * limitations under the License.
 */
package org.apache.rocketmq.client.impl;

/**
 * 消息发送方式
 */
public enum CommunicationMode {
    /**
     * 默认
     * 同步:代表 Producer将Message发送出去之后，
     * 会等待Broker的返回，然后再发送下一条消息
     */
    SYNC,
    /**
     * 异步：代表 Producer将Message发送出去之后，
     * 不会等待Broker的返回，而是会通过回调的方式来处理Broker的响应
     */
    ASYNC,
    /**
     * 单向：代表 Producer将Message发送出去之后，
     * 不会关心Broker的返回，此模式性能会非常好
     */
    ONEWAY,
}
